Word.ws English Dictionary

retention tank

retention tank noun: a tank for the retention of toilet waste, e.g. on a train.

Noun

retention tank (plural retention tanks)

  1. A tank for the retention of toilet waste, e.g. on a train.
    • Eleven four-coach 'Castles' are on order, with eight delivered. These are former GWR Mk 3s that have been converted by fitting sliding doors, passenger information screens and retention tanks.2020 January 2, “Fleet News”, in Rail, page 20

Forms of retention tank

pluralretention tanks

Questions about retention tank

What does retention tank mean?
Retention tank means a tank for the retention of toilet waste, e.g. on a train.
What part of speech is retention tank?
Retention tank is a noun.
What is the plural of retention tank?
The plural of retention tank is retention tanks.

Words near retention tank in the dictionary

  1. retention basins
  2. retention line
  3. retention lines
  4. retention pond
  5. retention ponds
  6. retention tank
  7. retention tanks
  8. retention time
  9. retention times
  10. retentional
  11. retentionist

Source and license

Adapted from Wiktionary: retention tank (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “retention tank.” Word.ws, https://word.ws/retention_tank. Based on Wiktionary, CC BY-SA 4.0.